320516 has 12 divisors (see below), whose sum is σ = 641088. Its totient is φ = 137352.

The previous prime is 320513. The next prime is 320521. The reversal of 320516 is 615023.

320516 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 320494 and 320503.

It is not an unprimeable number, because it can be changed into a prime (320513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5696 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (53424).

2³²⁰⁵¹⁶ is an apocalyptic number.

It is an amenable number.

320516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320516 is a wasteful number, since it uses less digits than its factorization.

320516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11458 (or 11456 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 320516 is about 566.1413251124. The cubic root of 320516 is about 68.4357826067.

Adding to 320516 its reverse (615023), we get a palindrome (935539).

The spelling of 320516 in words is "three hundred twenty thousand, five hundred sixteen".